Tread portion of an automobile tire



FIG. 1 is a perspective view of a tread portion of an automobile tire, it being understood that the tread pattern repeats uniformly throughout the circumference of the tire.

FIG. 2 is an enlarged front elevation view thereof, the top plan view, the bottom plan view and the rear elevation view are identical with the front elevation view.

FIG. 3 is a left side elevation view thereof, the right side elevation view is identical with the left side elevation view.

FIG. 4 is an enlarged fragmentary front view thereof; and,

FIG. 5 is a cross-sectional view thereof taken along line 5—5 in FIG. 4.

The portion of the article shown in broken lines is for illustrative purpose only and forms no part of the claimed design. 

The ornamental design for a tread portion of an automobile tire, as shown and described. 